certainly you heard russia this week sort of seeing the writing on the wall. maybe our great ally isn't going -- isn't going to stay maybe assad will fall. those were the strongest words we heard, which is another indication that might happen. >> martha, you talked about retribution and the fact all sides will destroy everything in their path. side gets cornered and there's talk about chemical weapons. is that in play, he could use chemical weapons? >> i think that is the absolute key here. two weeks ago -- it was two weeks ago, right, chemical weapons, the u.s. intelligence spotted the syrian regime putting chemicals, putting precursors of chemicals in actual bombs and they were near airfields and that scared everybody. that's the day you saw president obama come out. intelligence in the last couple of weeks since then, they aren't as worried but those chemicals can last in those so i think that threat is out. there's nothing that scares the u.s. more than that. he would probably if he used chemical weapons and was backed into a corner used it against his own